Communicating new insights!


“The formulation of a problem is often more essential than its solution, which may be merely a matter of mathematical or experimental skill.” - Einstein

  • My scientific interest grounds in interdisciplinary research on applied data science and causal machine learning for visitor management and smart mobility. My research is cited more than 750 times (according to Google Scholar).

I’ve been asked to review for several renowned journals and conferences in the field of Business & Information Systems Engineering (e.g., Business & Information Systems Engineering, Electronic Markets, Information Systems Journal) and Energy Informatics (e.g., Joule, Applied Energy). I also served as Associate Editor for the European Conference on Information Systems, the International Conference on Wirtschaftsinformatik, and INFORMATIK.

Furthermore, I am an external reviewer for some doctoral theses at the University of Bayreuth and the Université du Luxembourg.

See attached my publications:

Conferences and Journals


  • Graf-Drasch, V., Keller, R., Meindl, O., Röhrich, F. (2023) The Design of Citizen-Centric Green IS in Sustainable Smart Districts“, Business & Information Systems Engineering (Forthcoming).


  • Baumgarte, F., Eiser, N., Kaiser, M., Langer, K., Keller, R. (2022) Smart Electric Vehicle Charging considering Discounts for Customer Flexibility“, Proceedings of the 28th Americas Concerence on Information Systems.
  • Baumgarte, F., Keller, R., Röhrich, F., Valett, L., Zinsbacher, D. (2022) Revealing influences on carsharing user’s trip distance in small urban areas, Transportation Research Part D (105), Article 103252.
  • Bollenbach, J., Neubig, S., Hein, A., Keller, R., Krcmar, H. (2022) Using machine learning to predict POI occupancy to reduce overcrowding, Lecture Notes in Informatics.
  • Keller, R., Ollig, P., Rövekamp, P. (2022) Pathways to Developing Digital Capabilities within Entrepreneurial Initiatives in Pre-Digital Organizations, Business & Information Systems Engineering (64).
  • Leinauer, C., Schott, P., Fridgen, G., Keller, R., Ollig, P., Weibelzahl, M. (2022) Obstacles to demand response: Why industrial companies do not adapt their power consumption to volatile power generation”, Energy Policy (165), Article 112876.
  • Rövekamp, P., Ollig, P., Buhl, H. U., Keller, R., Christmann, A., Remmert, P., Thamm, T. (2022) How Dr. Oetker‘s Digital Platform Strategy Evolved to Include Cross-Platform Orchestration, MIS Quarterly Executive (21:1).


  • Baumgarte, F., Brandt, T., Keller, R., Röhrich, F., Schmidt, L. (2021) You’ll never share alone: Analyzing Carsharing User Group Behavior“, Transportation Research Part D (93), Article 102754.
  • Baumgarte, F., Dombezki, L., Kecht, C., Wolf, L., Keller, R. (2021) “AI-based Decision Support for Sustainable Operation of Electric Vehicle Charging Parks“, Proceedings of the 54th Hawaii International Conference on System Sciences. (nominated for the best paper award)
  • Baumgarte, F., Kaiser, M., Keller, R. (2021) “Policy support measures for widespread expansion of fast charging infrastructure for electric vehicles“, Energy Policy (156), Article 112372.
  • Sedlmeir, J., Buhl, H. U., Fridgen, G., Keller, R. (2021) “Recent Developments in Blockchain Technology and their Impact on Energy Consumption”, arXiv:2102.07886.


  • Fridgen, G., Keller, R., Körner, M., Schöpf, M. (2020). “A holistic view on sector coupling”, Energy Policy (147), Article 111913.
  • Keller, R., Fridgen, G., Häfner, L., Sachs, T. (2020). “Scheduling Flexible Demand in Cloud Computing Spot Markets – A Real Options Approach”, Business & Information Systems Engineering (62:1).
  • Oesterle, S., Jöhnk, J., Keller, R., Urbach, N., and Yu, X. (2020) “A Contingency Lens on Cloud Provider Management Processes”, Business Research (13:3).
  • Sedlmeir, J., Buhl, H. U., Fridgen, G., Keller, R. (2020). “Ein Blick auf aktuelle Entwicklungen bei Blockchains und deren Auswirkungen auf den Energieverbrauch“, Informatik-Spektrum (43:6).
  • Sedlmeir, J., Buhl, H.U., Fridgen, G., Keller, R. (2020). “The Energy Consumption of Blockchain Technology: Beyond Myth”, Business & Information Systems Engineering (62:6).


  • Hofmann, P., Keller, R., Urbach, N. (2019). “Inter-technology Relationship Networks: Arranging Technologies through Text Mining“, Technological Forecasting & Social Change (31).
  • Keller, R., Stohr, A., Fridgen, G., Lockl, J., Rieger, A. (2019). “Affordance-Experimentation-Actualization Theory in Artificial Intelligence Research – A Predictive Maintenance Story”, Proceedings of the 40th International Conference on Information Systems.
  • Keller, R., Ollig, P., Fridgen, G. (2019). “Dealing with Technical Debt – Logics of Agility and Reliability in IT organizations”, Proceedings of the 27th European Conference on Information Systems.
  • Keller, R., Röhrich, F., Schmidt, L., Fridgen, G. (2019). “Sustainability’s Coming Home: Preliminary Design Principles for the Sustainable Smart District”, Proceedings of the 14th International Conference on Wirtschaftsinformatik.
  • Körner, M., Bauer, D., Keller, R., Schlereth, A., Simon, P. (2019). “Extending the Automation Pyramid for Industrial Demand Side Management“, Procedia CIRP (81).
  • Rösch, M., Bauer, D., Haupt, L., Keller, R., Bauernhansl, T., Fridgen, G., Sauer, A., Reinhart, G. (2019). “Harnessing the Full Potential of Industrial Demand-side Flexibility: An End-to-End Approach Connecting Machines with Markets Through Service-Oriented IT Platforms”, Applied Sciences (2019:9).
  • Thimmel, M., Keller, R., Rövekamp, P., Fridgen, G. (2019). “Compensating Balancing Demand by Spatial Load Migration – The Case of Geographically Distributed Data Centers“, Energy Policy (132).


  • Schott, P., Ahrens, R., Bauer, D., Hering, F., Keller, R., Pullmann, J., Schel, D., Schimmelpfennig, J., Simon, P., Weber, T., Abele, E., Bauernhansl, T., Fridgen, G., Jarke, M., Reinhart, G. (2018). “Flexible IT Platform for Synchronizing Energy Demands with Volatile Markets”, it – Information Technology (60:3).
  • Unterberger, E., Buhl, H.U., Häfner, L., Keller, F., Keller, R., Ober, S., Paulick-Thiel, C., Reinhart, G., Schöpf, M., Simon, P. (2018). “The regional and social impact of energy flexible factories”, Procedia Manufacturing (21).


  • Bauer, D., Abele, E., Ahrens, R., Bauernhansl, T., Fridgen, G., Jarke, M., Keller, F., Keller, R., Pullmann, J., Reiners, R., Reinhart, G., Schel, D., Schöpf, M., Schraml, P., Simon, P. (2017). “Flexible IT-platform to Synchronize Energy Demands with Volatile Markets”, Procedia CIRP (63).
  • Fridgen, G., Keller, R., Thimmel, M., Wederhake L. (2017). “Shifting load through space – the economics of spatial demand side management using distributed data centers”, Energy Policy (109).


  • Keller, R. (2016). “Analyse von Risikomanagementstrategien in Cloudnetzwerken – Was tun bei verknüpften, voneinander abhängigen Cloud Services?“, HMD – Praxis der Wirtschaftsinformatik (53:5).
  • Keller, R., Berlage, T. (2016). “FIT für die Zukunft“, Laborjournal (2016:01).


  • Fridgen, G., Keller, R., Thimmel, M., Wederhake L. (2015). “Virtualizing Balancing Power: An Energy-Aware Load Dispatcher for Cloud Computing”, Energy Informatics & Management.


  • Afflerbach, P., Fridgen G., Keller, R., Rathgeber, A., Strobel F. (2014). “The By-Product Effect on Metal Markets – New Insights to the Price Behavior of Minor Metals”, Resources Policy (42:1).
  • Keller, R., König, C. (2014). “A Reference Model to Support Risk Identification in Cloud Networks”, Proceedings of the 35th International Conference on Information Systems.

Books, Chapters, and Studies

  • Baumgarte, F., Keller, R., Roth, L., Strüker, J., Wolf, L. (2023). “Elektromobilität im Tourismus – Herausforderungen und potenzielle Lösungsansätze“, in: Digital Leadership im Tourismus.
  • Bergler, M., Lorenz, V., Niemeijer, C., Keller, R. (2023). Ergebnisbericht zur Gästebefragung im Use Case Nordsee Schleswig-Holstein – Büsum“, Project Report.
  • Bergler, M., Lorenz, V., Niemeijer, C., Keller, R. (2023). Ergebnisbericht zur Gästebefragung im use Case Nordsee Schleswig-Holstein St. Peter Ording“, Project Report.
  • Schmücker, D., Keller, R., Reif, J., Schubert, J., Sommer, G. (2023). “Digitales Besuchermanagement im Tourismus – Konzeptioneller Rahmen und Gestaltungsmöglichkeiten“, in: Digital Leadership im Tourismus.
  • Eisele, J., Bollenbach, J., Brey, S., Schubert, J., Sommer, G., Keller, R. (2022). “Besucherlenkung und Reduktion des motorisierten Freizeitverkehrs – das Potential datengetriebener und flexibler Busangebote“, in: Innovation und Kooperation auf dem Weg zur All Electric Society.
  • Keller, R., Stohr, A., Weibelzahl, M., Wolf, L. (2022). “Elektromobilität im ländlichen Raum – Handlungsempfehlungen
    für die Gestaltung der Mobilität von Morgen“, Whitepaper.
  • Bauernhansl, T., Bauer, D., Abele, E., Ahrens, R., Bank, L., Brugger, M., Colangelo, E., Eigenbrod, H., Fridgen, G., Gonzalez Vasquez, F., Grigorjan, A., Jarke, M., Keller, R., Lodwig, R., Pullmann, J., Reinhart, G., Rösch, M., Sauer, A., Schel, D., Schlereth, A., Schott, P., Schulz, F., Sedlmeir, J., Seitz, P., Simon, P., Weber, T. (2019). “Industrie 4.0 als Befähiger für Energieflexibilität“, in: Energieflexibilität in der deutschen Industrie : Ergebnisse aus dem Kopernikus-Projekt – Synchronisierte und energieadaptive Produktionstechnik zur flexiblen Ausrichtung von Industrieprozessen auf eine fluktuierende Energieversorgung (SynErgie).
  • Keller, R. (2019). “Cloud Networks as Platform-based Ecosystems: Detecting Management Implications for Actors in Cloud Networks”, Doctoral Thesis.
  • Duelli, C., Keller, R., Manderscheid, J., Manntz, A., Röglinger, M., Schmidt, M. (2018). “Enabling Flexible Laboratory Processes – Designing the Laboratory Information System of the Future”, in: Business Process Management Cases.